
*,*::before,*::after{
    box-sizing: border-box;
}
a{
    cursor: pointer;
}
body{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    /*background:transparent url("b7.jpg") repeat fixed center ;
    background-origin: border-box;
    background-clip: border-box;
    background-size: cover;*/
}
.container{
    width: 100%;
    height: 1000px;
   /* background:transparent url("b4.jpg") repeat scroll center ;
    background-origin: border-box;
    background-clip: border-box;
    background-size: cover;*/
    border: dashed 1px red;
}
.header{
    width: 100%;
    height: auto;
    border: solid 1px blueviolet;
}
.content{
    width: 100%;
    border: solid 1px chartreuse;
}
.nav_area{
    background: #5f9ea0;
    width: 950px;
    min-width: 950px;
    white-space: nowrap;
    height: 40px;
    min-height: 40px;
    margin: auto;
    padding: 0;
    top: 0px;
   /* filter: alpha(opacity=50);
    opacity: .5;*/
    position: relative;
}
.nav{
    list-style: none;
    margin: 0px 30px 0px 30px;
    padding: 0px;
    line-height: 40px;
}
.nav li{
    list-style: none;
    float: left;
    display: inline;
    margin: 0px auto 0px auto;
}
.nav li a{
    text-decoration: none;
    width: 100px;
    height: 40px;
    padding: 0px 15px;
    font-family: sans-serif;
    font-weight: bolder;
    font-size: 16px;
    display: inline-block;
    text-align: center;
}
.nav_item
{
    color: #FFF;
}

.navHover{
    color: #5f9ea0 ;
    background: #FFF;
}
/*.nav li a:hover{*/
    /*color: #5f9ea0;*/
    /*background: #FFF;*/
/*}*/
/*
/!* 鼠标覆盖时，显示子菜单*!/
.nav li:hover>.nav_children {
    display: block;
}*/

.nav .nav_children{
    display: none;
    position: absolute;
    top: 40px;
    width: 100px;
    text-align: center;
    line-height: 20px !important;
    margin: 0;
    padding: 0;
    border-color: transparent #5f9ea0 #5f9ea0 ;
    border-width: 0px 2px 2px 2px;
    border-style:none solid solid;

}
.nav .nav_children li
{
    width: 100% !important;
    max-width:100% !important;
    display: block;
    text-align: center;
    border-top: 1px solid #5f9ea0;
    margin: 0;
    padding: 0;


}
.nav .nav_children li a{
    width: 100% !important;
    height: 20px !important;
    line-height: 20px !important;
    display: block;
    text-align: center;
    color: #5f9ea0;
    font-size: 12px;
    font-weight: normal;
}
.nav .nav_children li a:hover{
    background-color: #f0f8ff;
}
